package com.poisonh.unifiedauth.zxing.camera;

import android.graphics.Point;
import android.hardware.Camera;
import android.os.Handler;
import android.os.Message;
import android.util.Log;

public class PreviewCallback implements Camera.PreviewCallback
{

    static final String TAG = PreviewCallback.class.getSimpleName();

    final CameraConfigurationManager configManager;
    Handler previewHandler;
    int previewMessage;

    public PreviewCallback(CameraConfigurationManager configManager)
    {
        this.configManager = configManager;
    }

    public void setHandler(Handler previewHandler, int previewMessage)
    {
        this.previewHandler = previewHandler;
        this.previewMessage = previewMessage;
    }

    @Override
    public void onPreviewFrame(byte[] data, Camera camera)
    {
        Point cameraResolution = configManager.getCameraResolution();
        Handler thePreviewHandler = previewHandler;
        if (cameraResolution != null && thePreviewHandler != null)
        {
            Message message = thePreviewHandler.obtainMessage(previewMessage, cameraResolution.x, cameraResolution.y, data);
            message.sendToTarget();
            previewHandler = null;
        } else
        {
            Log.d(TAG, "Got preview callback, but no handler or resolution available");
        }
    }

}
